package com.michaellou.Test;

public class ConverFromGBKToUTF8 {
	 public static void main(String[] args){
	  
	  try {
	   
	         ConverFromGBKToUTF8 convert = new ConverFromGBKToUTF8();
	         byte [] fullByte = convert.gbk2utf8("");
	         String fullStr = new String(fullByte, "UTF-8");
	         System.out.println("string from GBK to UTF-8 byte:  " + fullStr);

	     } catch (Exception e) {
	      e.printStackTrace();
	     }
	 }
	 
	 public byte[] gbk2utf8(String chenese){
	  char c[] = chenese.toCharArray();
	        byte [] fullByte =new byte[3*c.length];
	        for(int i=0; i<c.length; i++){
	         int m = (int)c[i];
	         String word = Integer.toBinaryString(m);
//	         System.out.println(word);
	         
	         StringBuffer sb = new StringBuffer();
	         int len = 16 - word.length();
	         //补零
	         for(int j=0; j<len; j++){
	          sb.append("0");
	         }
	         sb.append(word);
	         sb.insert(0, "1110");
	         sb.insert(8, "10");
	         sb.insert(16, "10");
	         
//	         System.out.println(sb.toString());
	         
	         String s1 = sb.substring(0, 8);          
	         String s2 = sb.substring(8, 16);          
	         String s3 = sb.substring(16);
	         
	         byte b0 = Integer.valueOf(s1, 2).byteValue();
	         byte b1 = Integer.valueOf(s2, 2).byteValue();
	         byte b2 = Integer.valueOf(s3, 2).byteValue();
	         byte[] bf = new byte[3];
	         bf[0] = b0;
	         fullByte[i*3] = bf[0];
	         bf[1] = b1;
	         fullByte[i*3+1] = bf[1];
	         bf[2] = b2;
	         fullByte[i*3+2] = bf[2];
	         
	        }
	        return fullByte;
	 }
	}
